Cluster-socket.



No. 354,493. PATENTBD MAY 21, 1907. G. A. HARTBR.

CLUSTER SOCKET. APPLIOATION FILED Noir. 22. 190e.

2 SHEETS-SHEET 1.

y No. 854,493. PATENTBD MAY 21, 1907.

G. A. HARTER.'

CLUSTER SOCKET. 4APPLIUATION FILED Nv. zz. 1906.

2 SHEETS-SHEET 2.

Z50/5726556162' lwez/P UNITED .STATES PATnNr OFFICE., 1

UST-AV 'A5' HARTER, OF CHICAGIILLIN 01s;

b LusTER--So-oKr-:rl 1

No. 854,493. Vspecificationof ToaZZ uitom t may aendern: --1

Beit known that I, GUsTAv A. HARTER, a

citizen f the UnitedStates, residing at Chicago,qin the county of Cook and State of Ilhnois, have invented certain new and usef ul Improvements lin Cluster- Sockets, v of which the following lis a'specication.

My inventionv re ates to improvements in Y electric lamp cluster sockets, and has for its salient object to provide a cluster socket which is cheap, ea'sy of manufacture, durable, and attractive in appearance; wherein the parts are positively positioned, so that they cannot; possibly, become deranged, and

wherein substantially perfect insulation" of the electrically separated'c'onductive parts` isf-positively insured. A

. Other and further objects of my invention Awill best become apparentto those skilled in the art from the following description,- taken in conjunction with the accompanying drawings,` wherein;

Figure 1 is a sec-tion on line `of Figf2.

^ Fig. 2. isajbottom plan view of Fig. 1. Fig.

3 is a plan of a modified embodiment, and, Figsf'li.. and 5 are sections on lines 4-4 and `,5--5 respectively of Fig. 3.

Throughout'the drawing like'numerals of reference refer always to like parts. Y

In. general I provide a cluster lamp socket4 comprising a body of plastic insulating material of suitable character, such as glass,

` adapted to be molded when in proper molten condition, such body being suitably and advantageously shaped, and having permanently associated therewith, in inseparable relationthereto, suitable electric lamp socket contacts, connecting electrical conductors,

embedded in the insulating body in insulated relation to each other, and exposed terminal extensions of the connectors, properly positioned in the glass body for ready connection with the line wiring.

5 indicates the body of insulating material,

such'as glass, molded while molten tosuitable form, preferably round in plan, and generally convexlycurved from its greatest diameter in substantially the top plane to a minimum' diameter in substantially the bottom plane thereof. To facilitate the operation of making the cluster, and to lighten and cheapen the construction, the concave shape of the side'is maintained only mareas adjacent the lamp sockets, as shown in the drawing at 6, the intermediate areas being reduced in size,

gaeeatea Mayen 1907, pplioation'ileNovember-22,1906. Serial Nc.4-3 4 4, 54=El. I l' f upper surface of-` the bodyA is a .recess Sand at its lower surface "a central recess l9, -cemrn'unicating with the upper recess through a central aperture 10 ,j and. apertures 1 1 These afp-A be led to theterininals tobe'described.

. is-is'indicajff' the metalliogsocket-'Shelisy,

' having .inturned iianges 114' at ,their 'upper 1 or radially innerextremities, tolgive said shells strength to resist orushingstrain'and' avoid buckling of said shell'slin the nioldingof-the ranged, preferably 'with an inclination :down-- Ward from al horizontal plane towardtheir- .open mouths, and are extleri-orlysurrounded by the-glass body,f the interiorv surfaces'ofbthe 4socket shells being*free'forjthe-receptionof, parallel lamp 1' arrangementv shown, the socketshellsare electrically con-- lamps. In the nected by a" bare conductive wire 15 which extends through agenerally circularpath, into suitable Amechanipal and electrical connection with each shell,n and has its. endsv leef isf

twisted together, as shown-at 16, and led'V down throughthebody ofthe glass to a suit..

able point -Where the wire 'is'looped-a's shown at 17 to form part of a terminal connection,l 'f

located-within the recess v9 and .accessible from the exterior ofthe appliance. yThe loop 17 bears upon a bushing 18 embedded' in the glass body with only .its end surface levelwiththe bottom of the recess 49, said` bushing being interiorly screw threaded for the `reception of a screw 19, these parts form- Aing convenient ,terminal binding-posts.

2-1 indicates the center-contact connector,

ably comprising a bare wire embedded in the glass in suitable relation to the socketshells' tacts, or any suitable metallic contacts, not

shown, may be attached thereto.

.At some suitable point the ends of' theA wire 21 are twisted together as at 23, and brought down through the glass-body to the as shown at 7, to form depressions between 'for all of the sockets, said connector prefer; 95- Y 'I oo top of the recess 9 Where the ends are twisted into a loop /17 4sea-ted on a bushing 18, par

tiallyY embedded in the glass, andreceiving shell `to shell again, andsoon, or any other.

scheme of wiring may be used, in any event the terminals being anchored in theglass and exposed for connection withoutside Wiring.

At suitable points within the-recess 9 I provide bosses in which are seated in-` Ateriorlyfthreaded studs 26, partially ernbedded in the glass` body for permanent .attachment, such studs constituting anchorages for screws which maybe conveniently employedin attaching to the article a-suitable device for covering and concealing the recess 9. In dotted lines in Fig. 1', I have' shown at 27 the outline of a snap-switch of a' Well known pattern, which may be conveniently applied for the pur ose of controlling 1 the `circuit wherein the c uster may be employed, .and at the same timecoveringI and concealing the recess 9l and the exposed electrical contact parts therein. l

In Figs. 3, 4 and 5, I have shown' an attaching device which I preferably incorpo- .rate in my cluster.

In said views it will be observed that the body is not' recessed las i Shown at 8 (in Figs. 1 and 2) .but is relatively, thick throughout its centralv zone, and that the apertures-11 are also dispensed with. In

.thetop of the body,l however, are provided vopposlte radiating sloping depressions orl rooves 2 8, communicating at their inner.,

ower ends with' vthe central aperture 10. 30

i indicates an attaching fixture comprising a tubular part 31 internally' and. externallythreaded, and made integral Withtwoseparated legs 32, 32 straddling the grooves 28,

sus

and A at .theire'nds provided with outspread 'feet y33 which are embedded directly in the glass body. Thus the attaching fixture is" made part of the'unit and aords means for connection of the cluster to a stud internally or externallyl threaded. The Wiring may -be led through the lfixture 30 o r through the grooves. 2 8`and between legs 32 as occasio'n may require.

WhileI have herein described in some dey tail a specific form and construction of my invention which I have` found in practice to be advantageous in many respects, I do not desire to beunderstood as limiting'myself to exact details of constructionl further than as specified inthe claims, as it will be apparent to those skilled 'in the art' that numerous changes might be made in the embodiment `of my spirit and scope.

invention Without departure from itsA n Having thus described my invention, what I I claim and desire to secure/by Letters Patent, of the Unite -States, is:

lamp socket comprising a plastic material molde -to ,A y 1Q 1. As an articl f manufacture, a cluster body of insulating suitable form, an l having embedded therein .to suitable extent 7- for inseparable attachment thereto, lampv socket rims, center-contact conductors, electrical connections for the rims` and center-l conta'ct conductors, and exposed for said connections.

v2. As an article oflmanufacture, a cluster terminals lamp socket com rising a body of plastic in? sulating, materia molded into suitable form, a series of radially disposed socket lamlp shells exteriorly embedded insaid ody and interiorly open, a connector for saidy shells sion led to an exposed terminal osition, and a z center contact connectorythrough the material bddyto an exposed terminal position. l'

ikewise 'ledi socket com .a molded plastic body having soc et` s ellsil partially embedded therein, a socket-shell connecting wire, an .exposed terminal part embedded in said body Wherewith the wire is connected, and a center-contact connecting wire led to an exposed terminal.

4. As an article of manufacture, a unitary cluster socket comprising amolded body` of plastic insulating material, having 'permanently associated therewith and molded therein lam socket shells, partially -em- ICO bedded in t e body, a shell connectorembedded therein and having apart exteriorly exposed for connection with exterior wiring, a center-contact connector havin a part likewise exposed, and screw-threa ed studs disposedto receive supports for a covering for the connector terminals.

5. article of manufacture consisting of a unitary cluster .socket for incandescent electric lamps, comprising a molded body of insulating material provided with an' externally open recess, said body havin embedded therein to suitable extent an permanentlysecured in ositionsrelative'thereto,threaded termina members arranged in the' recess, lamp contacts, rand connectors for the lamp contacts extended Vto the recess in the body threaded terminal members. g

6. As anarticle of manufacture, a unitary cluster lamp socket comprising a body of plastic material molded to suitable form, and

suitable lamp sockets, contacts, connections,

and attachment devices "anseparablyf-em- ,bedded in the body.

7. As an article of manufacture, a unitary cluster socket comprising'ia ofv plastic I 2OV and electrically connected the ,s embedded in said body and having afnexteni l o I, I; 3. As an article of manufacture, a cluster i5 body.

5 portion.

8. As an article of manufacture, a unitary cluster socket comprising a body of plastic insulating material of suitable conguration havingan aperture therethrough; Vsuitable io-lamp sockets, contacts and connections inseparably associated With the body in molding, andan attaching part comprising a tu- `bular portion, and separated legs'straddling i the orifice and feet embedded in the plastic 9; As an article of manufacture; a cluster lamp socket comprising a body of plastic insulating materia molded to suitable form roviding lamp-receiving recesses, and havp zzo ing embedded therein to suitable extent for inseparable attachment thereto lamp contacts suitably positioned with respect to the recesses, electrical connections for said contacts, and exposed terminals for said connections.

10. As an article of manufacture, a unitary cluster socket comprising a body of lastic insulating material, having embed ed to suitable extent therein lamp contacts, connections and exposed terminals for said connections, and an attaching part comprising a threaded tubular portion having lateral apertures therein.

In testimony Vwhereof I hereunto set my hand in the presence of two Witnesses.

GUSTAV A. HARTER.

In the presence of- GEo. T. MAY, Jr., MARY F. ALLEN. 

